Concrete mixing and distributing machine



Nova 24, 1925- s. R. McKAY qoucnsu-z MIXING AND ms raxsu'rme MACHINE 1JIM 9' 1 116151 guns 1920 MMM Patented Nov. 24, 1925.

UNITED STATES PATENT OFFICE.

STEWART n. McKAY,

CONCRETE MIXING AND Application filed June 9,

To all whom it may concern:

Be it known that I, STEWART R. Molixr, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented a certain new and useful Improvement in Concrete Mixing andDistributing Machines, of which the following is a full, clear, andexact description.

This invention is particularly contrived for reducing the cost of layingconcrete foundations for buildings; although, obviosly, it is notrestricted to that particular use.

The invention includes a wheel truck which may be easily moved in anydesired. relation to the place where the concrete to be poured, and onthis truck are various coacting instrumentalities for mixing mate rialsto form the concrete slurry, and for conveying the same to and.discharging it into the molds or forms.

The invention consists in the construction and combination of partsshown in the drawing and hereinafter described and pointed outdefinitely in the appended claims.

In the drawings, Fig. 1 is a side elevation of the machine; Fig. 2 is aplan view of the machine; Fig. 3 is a bottom view of the trough showingthe means for supporting the drop bottoms of the trough; Fig. 8 is abottom plan view of the construction shown in Fig. 4; Fig. 4 is asectional side elevation in the plane of line 4-4 on Fig. 3; Fig. 5 is aperspective view of the trough, and Fig. 6 is a perspective view of themeans for delivering the slurry from the mixer into the trough.

The machine includes a wheel truck 10 on which the other parts aresupported. On this truck, located side by side, are two con crete mixers14 having their discharge ends 15 facing each other. Obviously, one ofthese mixers could be omitted without any more serious results thanreducing the capacity of the machine.

In front of these two mixers on the truck are two motors 16, 17, theformer for operating the mixers, and the latter for operating theconveyor to be presently described. Each mixer as shown is a rotatabledrum, having two external gears 14, which are in mesh with pinions 80fixed to ashaft 81 which is driven by motor 16.

A derrick 20 is secured to the truck and 0F CLEVELAND, OHIO.

DIIQ'I'RIB'UTING MACHINE.

1920. Serial No. 387,590.

extends upward and forward therefrom so that its front end overhangs thefront end of the truck.

Between the two side members 21 of the derrick is a trough 25 which atits lower end extends between the mixers in position such that they maybe made to discharge into it, and the lower end of this trough ispivoted on a horizontal transverse axis to the truck. Adjacent the upperend of the trough the derrick and trough are connected by block andtackle mechanism 23, by which the front upper end of the trough may beraised or lowered as required.

At the front end of the derrick are two vertical frame members 22 whichare suitably connected at their lower ends and a caster wheel 22 iscarried by the lower ends of these two frame members for the purpose ofengaging the ground and stabilizing the apparatus, especially when thetruck is being moved down hill.

These two frame members 22 have numerous holes 22 in them for thereception of pins or a rod 24 upon which the front end of the trough maybe supported and thereby the block and tackle mechanism will be relievedfrom constant strain.

The trough is formed of two channel iron side members 26 which arearranged in paralel relation with their flanges projecting toward oneanother, that is, inside the trough. The side members, near their upperedges, are connected at suitable intervals by cross bars 27. Also crossplates 28 extend between and are connected to the bottoms of said sidemembers and lie between the adjacent ends of certain hinged bottomplates. Each cross plate 28 is formed with clownwardly extended ribs 29,and in these ribs are holes for the reception of the hookshaped arms 31which are fixed to the under side of the front end of each bottom plate80, whereby the front end of said bottom plate is hinged to andsupported by the ad j acent plate 28.

A U-shaped clamping bar 40 is provided for engaging the adjacent ends oftwo bottom plates. These clamping bars have in theirbottoms slots 41which extend lengthwise of the trough. Bolts 42 supported by the flanges29 go through these slots 11. A nut 13 having a convenient, operatinghandle is screwed onto the lower end of these bolt-s 42 and by engagingclamping bar 40 when it is in the proper position force it upward, andby engaging with the adjacent ends of the two bottom plates 80 forcethem into engagement with the bottom flanges of the trough members 21.

To permit the lower end of any bottom plate to swing down to form anopening in the bottom of the trough, one unscrews the nuts 43 and thenmoves the clamp bar 40 rearward until the front upper end of said clampbar becomes disengaged from the lower edge of the bottom plate 30, thedownward movement of the clamp bar 40 also carries the rear upper edgethereof sufficiently below the lower bottom plate, that it may swingwhen its lower end is released.

An endless flight conveyor belt is provided in this trough and it isformed with flight wings which fit the trough and near their ends theflight wings engage and slide upon the inwardly directed lower flanges22 of the two side members of the trough, and the parts of said wingsbetween said flanges slide upon the bottom plates 30. At

the lower end of the trough there is an idler sprocket 33 over whichthis conveyor belt runs. At the upper end of the trough there is adriving sprocket 3a fixed to a shaft 35 to which also is secured asprocket- 36. A sprocket chain 37 runs over this sprocket and over asprocket 38 which is adjacent to and has a driving connection with themotor 17. By this power transmitting mechanism the upper or drivingsprocket 34 is rotated, and therefore the lower reach of the conveyorbelt is drawn upward in the trough and is kept straight. The upper reachof said belt rides on the tops of the side members 26 of the trough, andany looseness in the conveyor belt is in the upper reach thereof.

At the upper end of the trough a spout 60 is secured by any suitablemeans, although preferably it is hung on a stud 61 carried by the troughso that the spout may be swung into any desired position relatively tothe upper discharge end of the trough for discharging the concreteslurry into the molds or forms. Associated with each mixer is anextension spout 72 for delivering the mixed concrete slurry into thelower end of the trough 25. This extension spout has a lower fixedmember 71 which is secured at the proper downward inclination to twoposts fixed to the truck. The upper member of the trough is slidableupon the lower member by means of levers 74, and this upper member maylie outside of the mixer or it may project through the mixer dischargeopening 15 into the mixer and to such a position that the mixed concretewill drop into it and will slide down the spout and will be deliveredinto the trough 25.

The conveyor will carry this slurry up the trough 25 and discharge itfrom its upper end into the spout 60 down which it will run into themolds prepared to receive it.

If at any time, and for any reason, the conveyor or its operatingmechanism ceases to act, and comes to need repairs, it is neces sary toimmediately clean out of the trough the concrete slurry therein whichotherwise would harden and render the conveyor permanently inoperative.To enable this to be done the trough bottoms are made so that theirlower ends may be swung down as stated to allow this slurry to run out.In this trough 25 also extending from the bottom to the top thereof is aflushing pipe having numerous perforations in its sides. This pipe goesthrough holes in the cross bars 22 and is thereby supported. When it isdesired to clean the trough and the parts therein of the concrete slurryso that it shall not harden in the trough, water is forced through thispipe and is discharged into thetrough, and'in a short time will wash thetrough and the conveyor clean of the concrete slurry.

Having described my invention, I claim 1. In a device of the characterdescribed, the combination of a wheeled truck, a derrick thereon, aninclined trough pivoted to the truck, a concrete mixer on said truck,means to discharge material from the mixer into said trough, meanscarried by the derrick to support the front end of the trough, anendless flight conveyor in said trough, means to actuate said conveyor,a perforated water pipe connected to the trough extended lengthwisethereof and arranged to discharge into said trough.

2. In a device of the character described, the combination of a wheeledtruck, a derrick thereon, an inclined trough pivoted to the truck, aconcrete mixer on said truck, means to discharge material from the mixerinto said trough, means carried by the derrick to support the front endof the trough, an endless flight conveyor in said trough, means toactuate said conveyor, said trough having bottom plates hinged thereto,and means for supporting the unhinged ends of said bottom plates.

3. In a device of the character described, the combination of a wheeledtruck, a concrete mixer thereon, a trough pivoted. to the truck inposition to receive material discharged from said mixer and extendingupward at an angle from its pivot, a derrick connected to the troughadjacent its forward end to said truck, means thereon to support theupper end of said trough, an endless flight conveyor movable in saidtrough, and means to actuate said conveyor.

4. In a device of the character described. the combination of a wheeledtruck, a derrick thereon, an inclined trough pivoted to the truck, meanscarried by the derrick, to

support the front end of the trough, an endless flight conveyor in saidtrough, sprocket wheels mounted on said trough at both the upper andlower ends thereof for actuating said flight conveyor, a motor, anddriving connections from the motor to the upper one of said sprocketwheels.

5. In a device of the character described, the combination of a wheeledtruck, an inclined derrick structure which overhangs the front end ofthe truck, a member of said derrick structure connected with the frontend of said structure extending downward therefrom, a supporting wheelcarried by the lower end of said member, a trough pivoted to the truckand extending up-- wardly and forwardly therefrom, means carried by saidderrick structure for adjust ably supporting the front end of saidtrough, a flight conveyor extending from one end of the trough toanother having its lower reach within the trough, and means foractuating said conveyor.

6. In a device of the character described, the combination of a wheeledtruck, a trough pivoted thereto and extending in an up Wardly inclineddirection therefrom, said trough having its bottom formed in part ofplates pivoted at their upper ends to said trough, means for drawing thelower ends of said bottom plates up into closed position, a conveyoroperable in said trough, and means for discharging concrete slurry inthe lower end of said trough.

7. In a device of the character described, the combination of a wheeledtruck, a trough pivoted thereto and extending in an upwardly inclineddirection therefrom, which trough has its bottom formed in part ofhinged bottom plates, and means to hold them in the closed positions,means for discharging concrete slurry into said trough, a conveyoroperable in said trough to move the slurry up to and discharge it fromthe upper end. of said trough, and perforated water pipe supported insaid trough near the upper edges thereof.

8. In a device of the character described,

the combination of a wheeled truck, a trough pivoted thereto andextending therefrom in an upwardly inclined direction said troughcomprising channel bar side members arranged with their flanges on theinside of the trough, cross members arranged at intervals connectingsaid side members near their upper edges, cross plates arranged atintervals connecting the bottoms of said side members, each of saidplates having a downwardly extended. longitudinal rib in which areholes, bottom plates for said trough each having hooks at their upperends which pass loosely through the holes in said ribs whereby thebottom plates are hinged to said cross plates, transverse clamp barsengaging the unhinged ends of said bottom plates, and means carried bysaid cross plates for operating said clamping bars to draw said bottomplates into closed position.

9. In a device of the character described, the combination of a wheeledtruck, a trough pivoted thereto and extending therefrom in an upwardlyinclined direction, said trough comprising channel bar side membersarranged with their flanges on the inside of the trough, cross membersarranged at intervals connecting said side members near their upperedges, plates arranged at inter vals connecting the bottoms of said sidemembers, each of said plates having a downwardly extended longitudinalrib in which are holes, bottom plates for said trough each having booksat their upper ends which pass loosely through the holes in said flangeswhereby the bottom plates are hinged to said cross plates, transverseclamp bars engaging the unhinged ends of said bottom plates, saidclamping bars having slots extending lengthwise of the trough, and boltscarried by said cross plates passing through said slots, and nuts on theends of said bolts.

In testimony whereof, I hereunto aflix my signature.

STElVART R. MoKAY.

